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6 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
| 3c900e57a3 | |||
| 6d562fb2e3 | |||
| b2517f51f2 | |||
| 20160689f4 | |||
| 6cab940785 | |||
| c10d296d82 |
@@ -517,7 +517,9 @@ void Graph::travellingSalesmanTabuSearchEngine(Graph &graph, unsigned tabuSteps,
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while(cheeseSupplied == true)
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{
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std::vector<unsigned> nextRoute;
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std::vector<unsigned> nextRoute = currentRoute;
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// ...na wszelki wypadek, gdyby cale sasiedztwo bylo na liscie tabu
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// (zeby algorytm sie nie wywalil)
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int nextRouteLength = -1;
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std::vector<unsigned> nextTabu(3, 0);
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@@ -565,14 +567,7 @@ void Graph::travellingSalesmanTabuSearchEngine(Graph &graph, unsigned tabuSteps,
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continue;
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if(nextRouteLength == -1)
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{
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nextRouteLength = neighbourRouteLength;
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nextRoute = neighbourRoute;
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nextTabu.at(1) = i;
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nextTabu.at(2) = j;
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}
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else if(nextRouteLength > neighbourRouteLength)
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if(nextRouteLength == -1 || nextRouteLength > neighbourRouteLength)
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{
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nextRouteLength = neighbourRouteLength;
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nextRoute = neighbourRoute;
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@@ -674,23 +669,33 @@ void Graph::travellingSalesmanTabuSearchEngine(Graph &graph, unsigned tabuSteps,
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}
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else
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{
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// W innym przypadku wlasciwa dywersyfikacja przez wygenerowanie nowego
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// rozwiazania startowego algorytmem hybrydowym losowo-zachlannym
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currentRoute = Graph::travellingSalesmanHybrid(graph);
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currentTabuSteps = tabuSteps;
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intensification = false;
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// Synchronizacja globalnie najlepszej trasy (2)
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globalOptimumMutex.lock();
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optimalRouteLength = globalOptimumLength;
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optimalRoute = globalOptimum;
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globalOptimumMutex.unlock();
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// W innym przypadku wlasciwa dywersyfikacja przez wygenerowanie nowego
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// rozwiazania startowego algorytmem hybrydowym losowo-zachlannym
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// (ale nie znacznie gorszego niz juz znalezione)
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int criticalLength = (15 * optimalRouteLength) / 10;
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int currentRouteLength;
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do
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{
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currentRoute = Graph::travellingSalesmanHybrid(graph);
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currentRouteLength = 0;
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for(int i = 1; i < currentRoute.size(); i++)
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currentRouteLength += graph.getWeight(currentRoute.at(i - 1), currentRoute.at(i));
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} while(currentRouteLength > criticalLength);
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currentTabuSteps = tabuSteps;
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intensification = false;
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}
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}
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// Reset licznika iteracji przed restartem
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stopCounter = 0;
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}
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std::cout << std::endl;
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}
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+3
-2
@@ -31,7 +31,7 @@ unsigned tabuLength = 0;
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// Domyslny stan dywersyfikacji
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bool tabuDiversification = true;
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// Domyslne kryterium dywersyfikacji, liczba iteracji bez poprawy
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int tabuIterationsToRestart = 10000;
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int tabuIterationsToRestart = 5000;
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// Domyslny czas zatrzymania algorytmu tabu search [s]
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unsigned tabuStopTime = 60;
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@@ -206,7 +206,7 @@ unsigned autoTabuLength(Graph &graph)
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{
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unsigned computedTabuLength;
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computedTabuLength = (2 * graph.getVertexNumber() / 10) * 10;
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computedTabuLength = 10 + (graph.getVertexNumber() / 10) * 10;
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if(computedTabuLength == 0)
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computedTabuLength = 10;
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@@ -439,6 +439,7 @@ int main(int argc, char *argv[])
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// Wyswietlenie trasy
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unsigned distFromStart = 0;
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unsigned length = 0;
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cout << endl;
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cout << route.at(0) << '\t' << length << '\t' << distFromStart << endl;
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for(int i = 1; i < route.size(); i++)
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{
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